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Case Study Building management systems Nobbs & Jones supply bespoke heating, ventilation and air conditioning (HVAC) Building Management Systems (BMS) using PLCs designed specifically for the building controls industry. Information such as temperature, humidity, status, etc. can be shared between each of these standalone systems and with the supervisory PC. This is normally done via serial cabling which proves expensive particularly if the individual system panels are some distance apart. In a recent contract with a Local Health Trust (LHT), Nobbs & Jones overcame this problem using the DeviceMaster-RTS. The LHT recently built three new buildings at their main site to replace an outdated remote site and to extend their health care services. In each of these new buildings there is a discrete BMS with all of the buildings connected via a LAN. A DeviceMaster-RTS 4 port unit is used to connect each of the BMS’s to the LAN. This allows the remote supervisory PC concurrent access to the building to both send and receive information from the BMS. Company Nobbs & Jones Application Building management system Products DeviceMaster-RTS In addition to the new buildings there are various remote sites that have smaller BMS’s. These are linked to the main site via DeviceMaster-RTS 1 port units, allowing a supervisor to send and receive information from the BMS, a task normally involving a standard telephone modem link between each site. The existing buildings within the main site are also being upgraded to include BMS monitoring via the LAN using both DeviceMaster-RTS units. ‘The DeviceMaster-RTS units were ideal for this project as they enabled monitoring and control across the LAN, saving considerable costs.’ This case study is an example of the work we carry out to deliver cost effective solutions to customers’ problems. If you need help in this complex field, contact Comtrol first.